mirror of
https://github.com/k3s-io/kubernetes.git
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299 lines
8.1 KiB
Go
299 lines
8.1 KiB
Go
// +build windows
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/*
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Copyright 2018 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package winkernel
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import (
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"encoding/json"
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"fmt"
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"github.com/Microsoft/hcsshim/hcn"
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"k8s.io/klog/v2"
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"strings"
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)
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type hnsV2 struct{}
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var (
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// LoadBalancerFlagsIPv6 enables IPV6.
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LoadBalancerFlagsIPv6 hcn.LoadBalancerFlags = 2
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)
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func (hns hnsV2) getNetworkByName(name string) (*hnsNetworkInfo, error) {
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hnsnetwork, err := hcn.GetNetworkByName(name)
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if err != nil {
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klog.Errorf("%v", err)
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return nil, err
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}
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var remoteSubnets []*remoteSubnetInfo
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for _, policy := range hnsnetwork.Policies {
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if policy.Type == hcn.RemoteSubnetRoute {
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policySettings := hcn.RemoteSubnetRoutePolicySetting{}
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err = json.Unmarshal(policy.Settings, &policySettings)
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if err != nil {
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return nil, fmt.Errorf("Failed to unmarshal Remote Subnet policy settings")
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}
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rs := &remoteSubnetInfo{
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destinationPrefix: policySettings.DestinationPrefix,
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isolationID: policySettings.IsolationId,
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providerAddress: policySettings.ProviderAddress,
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drMacAddress: policySettings.DistributedRouterMacAddress,
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}
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remoteSubnets = append(remoteSubnets, rs)
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}
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}
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return &hnsNetworkInfo{
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id: hnsnetwork.Id,
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name: hnsnetwork.Name,
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networkType: string(hnsnetwork.Type),
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remoteSubnets: remoteSubnets,
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}, nil
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}
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func (hns hnsV2) getEndpointByID(id string) (*endpointsInfo, error) {
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hnsendpoint, err := hcn.GetEndpointByID(id)
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if err != nil {
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return nil, err
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}
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return &endpointsInfo{ //TODO: fill out PA
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ip: hnsendpoint.IpConfigurations[0].IpAddress,
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isLocal: uint32(hnsendpoint.Flags&hcn.EndpointFlagsRemoteEndpoint) == 0, //TODO: Change isLocal to isRemote
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macAddress: hnsendpoint.MacAddress,
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hnsID: hnsendpoint.Id,
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hns: hns,
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}, nil
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}
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func (hns hnsV2) getEndpointByIpAddress(ip string, networkName string) (*endpointsInfo, error) {
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hnsnetwork, err := hcn.GetNetworkByName(networkName)
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if err != nil {
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klog.Errorf("%v", err)
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return nil, err
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}
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endpoints, err := hcn.ListEndpoints()
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if err != nil {
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return nil, fmt.Errorf("Failed to list endpoints: %v", err)
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}
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for _, endpoint := range endpoints {
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equal := false
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if endpoint.IpConfigurations != nil && len(endpoint.IpConfigurations) > 0 {
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equal = endpoint.IpConfigurations[0].IpAddress == ip
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if !equal && len(endpoint.IpConfigurations) > 1 {
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equal = endpoint.IpConfigurations[1].IpAddress == ip
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}
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}
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if equal && strings.EqualFold(endpoint.HostComputeNetwork, hnsnetwork.Id) {
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return &endpointsInfo{
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ip: ip,
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isLocal: uint32(endpoint.Flags&hcn.EndpointFlagsRemoteEndpoint) == 0, //TODO: Change isLocal to isRemote
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macAddress: endpoint.MacAddress,
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hnsID: endpoint.Id,
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hns: hns,
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}, nil
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}
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}
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return nil, fmt.Errorf("Endpoint %v not found on network %s", ip, networkName)
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}
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func (hns hnsV2) createEndpoint(ep *endpointsInfo, networkName string) (*endpointsInfo, error) {
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hnsNetwork, err := hcn.GetNetworkByName(networkName)
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if err != nil {
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return nil, err
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}
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var flags hcn.EndpointFlags
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if !ep.isLocal {
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flags |= hcn.EndpointFlagsRemoteEndpoint
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}
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ipConfig := &hcn.IpConfig{
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IpAddress: ep.ip,
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}
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hnsEndpoint := &hcn.HostComputeEndpoint{
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IpConfigurations: []hcn.IpConfig{*ipConfig},
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MacAddress: ep.macAddress,
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Flags: flags,
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SchemaVersion: hcn.SchemaVersion{
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Major: 2,
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Minor: 0,
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},
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}
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var createdEndpoint *hcn.HostComputeEndpoint
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if !ep.isLocal {
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if len(ep.providerAddress) != 0 {
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policySettings := hcn.ProviderAddressEndpointPolicySetting{
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ProviderAddress: ep.providerAddress,
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}
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policySettingsJson, err := json.Marshal(policySettings)
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if err != nil {
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return nil, fmt.Errorf("PA Policy creation failed: %v", err)
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}
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paPolicy := hcn.EndpointPolicy{
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Type: hcn.NetworkProviderAddress,
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Settings: policySettingsJson,
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}
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hnsEndpoint.Policies = append(hnsEndpoint.Policies, paPolicy)
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}
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createdEndpoint, err = hnsNetwork.CreateRemoteEndpoint(hnsEndpoint)
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if err != nil {
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return nil, err
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}
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} else {
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createdEndpoint, err = hnsNetwork.CreateEndpoint(hnsEndpoint)
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if err != nil {
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return nil, err
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}
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}
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return &endpointsInfo{
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ip: createdEndpoint.IpConfigurations[0].IpAddress,
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isLocal: uint32(createdEndpoint.Flags&hcn.EndpointFlagsRemoteEndpoint) == 0,
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macAddress: createdEndpoint.MacAddress,
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hnsID: createdEndpoint.Id,
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providerAddress: ep.providerAddress, //TODO get from createdEndpoint
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hns: hns,
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}, nil
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}
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func (hns hnsV2) deleteEndpoint(hnsID string) error {
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hnsendpoint, err := hcn.GetEndpointByID(hnsID)
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if err != nil {
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return err
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}
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err = hnsendpoint.Delete()
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if err == nil {
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klog.V(3).Infof("Remote endpoint resource deleted id %s", hnsID)
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}
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return err
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}
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func (hns hnsV2) getLoadBalancer(endpoints []endpointsInfo, flags loadBalancerFlags, sourceVip string, vip string, protocol uint16, internalPort uint16, externalPort uint16) (*loadBalancerInfo, error) {
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plists, err := hcn.ListLoadBalancers()
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if err != nil {
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return nil, err
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}
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for _, plist := range plists {
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if len(plist.HostComputeEndpoints) != len(endpoints) {
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continue
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}
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// Validate if input meets any of the policy lists
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lbPortMapping := plist.PortMappings[0]
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if lbPortMapping.Protocol == uint32(protocol) && lbPortMapping.InternalPort == internalPort && lbPortMapping.ExternalPort == externalPort && (lbPortMapping.Flags&1 != 0) == flags.isILB {
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if len(vip) > 0 {
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if len(plist.FrontendVIPs) == 0 || plist.FrontendVIPs[0] != vip {
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continue
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}
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} else if len(plist.FrontendVIPs) != 0 {
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continue
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}
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LogJson(plist, "Found existing Hns loadbalancer policy resource", 1)
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return &loadBalancerInfo{
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hnsID: plist.Id,
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}, nil
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}
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}
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var hnsEndpoints []hcn.HostComputeEndpoint
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for _, ep := range endpoints {
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endpoint, err := hcn.GetEndpointByID(ep.hnsID)
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if err != nil {
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return nil, err
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}
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hnsEndpoints = append(hnsEndpoints, *endpoint)
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}
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vips := []string{}
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if len(vip) > 0 {
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vips = append(vips, vip)
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}
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lbPortMappingFlags := hcn.LoadBalancerPortMappingFlagsNone
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if flags.isILB {
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lbPortMappingFlags |= hcn.LoadBalancerPortMappingFlagsILB
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}
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if flags.useMUX {
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lbPortMappingFlags |= hcn.LoadBalancerPortMappingFlagsUseMux
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}
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if flags.preserveDIP {
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lbPortMappingFlags |= hcn.LoadBalancerPortMappingFlagsPreserveDIP
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}
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if flags.localRoutedVIP {
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lbPortMappingFlags |= hcn.LoadBalancerPortMappingFlagsLocalRoutedVIP
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}
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lbFlags := hcn.LoadBalancerFlagsNone
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if flags.isDSR {
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lbFlags |= hcn.LoadBalancerFlagsDSR
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}
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if flags.isIPv6 {
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lbFlags |= LoadBalancerFlagsIPv6
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}
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lbDistributionType := hcn.LoadBalancerDistributionNone
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if flags.sessionAffinity {
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lbDistributionType = hcn.LoadBalancerDistributionSourceIP
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}
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loadBalancer := &hcn.HostComputeLoadBalancer{
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SourceVIP: sourceVip,
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PortMappings: []hcn.LoadBalancerPortMapping{
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{
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Protocol: uint32(protocol),
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InternalPort: internalPort,
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ExternalPort: externalPort,
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DistributionType: lbDistributionType,
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Flags: lbPortMappingFlags,
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},
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},
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FrontendVIPs: vips,
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SchemaVersion: hcn.SchemaVersion{
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Major: 2,
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Minor: 0,
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},
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Flags: lbFlags,
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}
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for _, endpoint := range hnsEndpoints {
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loadBalancer.HostComputeEndpoints = append(loadBalancer.HostComputeEndpoints, endpoint.Id)
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}
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lb, err := loadBalancer.Create()
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if err != nil {
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return nil, err
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}
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LogJson(lb, "Hns loadbalancer policy resource", 1)
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return &loadBalancerInfo{
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hnsID: lb.Id,
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}, err
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}
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func (hns hnsV2) deleteLoadBalancer(hnsID string) error {
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lb, err := hcn.GetLoadBalancerByID(hnsID)
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if err != nil {
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// Return silently
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return nil
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}
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err = lb.Delete()
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return err
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}
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